> "Yes, Steve's did come with large valves, but I have a friend who ordered a new set from him a couple of years ago and then now come with stock valves."
Again, I don't know what people mean when they use the term "large valves." Steve's 2180's come with 40mm intakes and 35.5 exhaust valves. He didn't make any changes with the valves. Those are the normal valves he uses for that engine. They work just fine. Run the engine without overheating it and it'll be 1000 hours before you need to take the heads off to take a look and clean it up. Run as lean as possible above 8K and it'll stay clean and last forever since at WOT you're only pulling 70% power or less. At the altitudes I fly (10.5 - 13.5) I'm pulling about 50% power and going 150 MPH. Down low just keep cylinder head and oil temps within limits. That's all there is to it. It's a great engine. Maybe the 1835 heads had stock valves, dunno. Mike KSEE ____________________________________________________________ Old School Yearbook Pics View Class Yearbooks Online Free. Search by School & Year. Look Now! http://thirdpartyoffers.juno.com/TGL3141/559c583dee957583d22f0st01vuc